<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1,user-scalable=no">
</head>
<body>
<div class="content_body">
    
</div>
<script>
    // let arr=[12,4,10];
    // let result=arr.map(function(item){
    //     return item/3;
    // });
    // console.log(result);

    let arr=[52,84,100,60,59];
    let result=arr.map(function(item){
        if(item >=60){
            return '及格';
        }else{
            return '不及格';
        }

    });
    console.log(result);
</script>
</body>
</html>